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X-CSE-ConnectionGUID: CTwGyURsQOGEHDNxTH+oRA== X-CSE-MsgGUID: mEFjMu1NQ9iQ3Jqe/0VL4Q== X-IronPort-AV: E=McAfee;i="6800,10657,11676"; a="81494827" X-IronPort-AV: E=Sophos;i="6.21,240,1763452800"; d="scan'208";a="81494827" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Jan 2026 05:33:25 -0800 X-CSE-ConnectionGUID: 4zREZ3QUT3yfk3tYQQGl9A== X-CSE-MsgGUID: Ke/QbYWMRKme+ihAlIqVpw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,240,1763452800"; d="scan'208";a="210271999" Received: from linux-pnp-server-27.sh.intel.com ([10.239.147.41]) by orviesa003.jf.intel.com with ESMTP; 20 Jan 2026 05:33:22 -0800 From: Tianyou Li To: David Hildenbrand , Oscar Salvador , Mike Rapoport , Wei Yang , Michal Hocko Cc: linux-mm@kvack.org, Yong Hu , Nanhai Zou , Yuan Liu , Tim Chen , Qiuxu Zhuo , Yu C Chen , Pan Deng , Tianyou Li , Chen Zhang , linux-kernel@vger.kernel.org Subject: [PATCH v8 0/3] Optimize zone->contiguous update and issue fix Date: Tue, 20 Jan 2026 22:33:43 +0800 Message-ID: <20260120143346.1427837-1-tianyou.li@intel.com> X-Mailer: git-send-email 2.47.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 8AED44000A X-Rspamd-Server: rspam06 X-Stat-Signature: nr3f9te87mqfkutossmx9ijsfj3u5gzd X-Rspam-User: X-HE-Tag: 1768916007-19973 X-HE-Meta: U2FsdGVkX1+vWkCZmfapETI4eaChAUQlf7dcGyovVUHdtfkKgJvVhIPlZ1QZJsq1XYoWOpRY/Pq8TyveT7ii9llXTRG17+RMP8NthzKuDWqQUbU3T7WHIX9ARdWKiLEpqV5DlLw9zmjXaZvI8DmMJyOgaHPPCQ4hw9HoSU7QqS2HaPWQDNGHr8FSDc6mkoDxlsFAaoXk08mXNeVygf6F6KHsb8XXtKk5My9uPWNPmkyDWsGsnQKc7VuhF2bTu+fI1bCDi9Ove8lepghRAdb8/DCEPJqTotrvBfztCo3XbWBCc5Iwt8ZgRlhm0iju3czs0K4NEJG5I6JoUPB4xBDWM1nPc1nebXJu3UAbzC7Qnf4ilfBndl2qqr+UYHUa3ghJoY6PO/p6zGLrnGFGN03pPo+m3vH7WN03qz4FyYJujCqTXxmLiOxkkCc28l7mmAPQp2rKCsMmekU4K/c3KgEnTdb6obmpYd8ckwpLPJhGfaUoGoaeOYsQvVt7zQ86+Zbxsv1mumcMmErZqaOdEQJhIUtS27072FB+3A+SZzxP1UZb/Pf/KiWna/6nGoD1GD/gVqSP+50YXu5obXWimvyHIKl+oG9QO7EN1y1PJCYXm/y9Yh9/ecBEXJDmnZhtlz56IXs9fTEahBsZwh1yb6BX+Ekl0MAxrNGd1jmZ/bF18eWDqxGJSSOco8xw6cIAaqG4SYyzMNMDHn5frMet7bhDRjE2HQeOY6xCXR0Eh1dM5Mzl888+FMAWlSag4DpQmTwXrTvBGMoB20V2HBjNcHonBIC7kbGxt2qXQYRLalwZxzlSlST0ZRSieyB7izP8ByZ3zZjJ2wH+l7Pn2tAT3leLdCcR4XuL9JIHn0HpxHWUfDkq4J1/lrvwPiBkTnJfe8WtFXdSi0RYFgTfau9RfpXpH6ecNvrtqPo39YlM++QFaoS67IHClywCBNDttkz0HHBJ8BuEGwrds05vXQ+0owx FypJbsMV SUfWOHrsxgNuvrAVSWU5XNlo4ggooLowk0QHFDAwY+7vzy4+bQqKNM7RQl9uwLVNtgm3NAeFGdFd3JRPpZeMBMSUEwUkmDdElrIHirl2UPROR725iEtJqmOQERFAT6qXZIqF/eqOljimHCYKStl9l4gjfAAcaCzks2xZmEJBWsbOeag77ZyejQDORUsr02ObohUrBKJ3bd76k5DK+E8NLBE4ky7wUeerjLGzI X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: This series contains 3 patches. The first one fix an issue when check the zone->contiguous during zone grows. The second one encapsulate the mhp_init_memmap_on_memory() and online_pages() into online_memory_block_pages(), the mhp_deinit_memmap_on_memory() and offline_pages() into offline_memory_block_pages(). The last one add a fast path to check the zone->contiguous. The issue fixed by the first patch can be found in the original code path. Changes History =============== v2 changes: Add check_zone_contiguous_fast function to check zone contiguity for new memory PFN ranges. v3 changes: Add zone contiguity check for empty zones. v4 changes: 1. Improve coding style. 2. Add fast path for zone contiguity check in memory unplugged cases, and update test results. 3. Refactor set_zone_contiguous: the new set_zone_contiguous updates zone contiguity based on the fast path results. v5 changes: 1. Improve coding style. 2. Fix a issue in which zone->contiguous was always false when adding new memory, leveraging the fast path optimization. v6 changes: 1. Improve coding style. 2. Add comments. v7 changes: 1. Rebased to 6.19-rc1 2. Reorder the patches so that the fix will be the first in the series. v8 changes: 1. Rebased to 6.19-rc6 2. Add online_memory_block_pages() and offline_memory_block_pages() Tianyou Li (2): mm/memory hotplug/unplug: Add online_memory_block_pages() and offline_memory_block_pages() mm/memory hotplug/unplug: Optimize zone->contiguous update when changes pfn range Yuan Liu (1): mm/memory hotplug: Fix zone->contiguous always false when hotplug drivers/base/memory.c | 53 +++---------- include/linux/memory_hotplug.h | 18 ++--- mm/internal.h | 8 +- mm/memory_hotplug.c | 136 +++++++++++++++++++++++++++++++-- mm/mm_init.c | 15 +++- 5 files changed, 167 insertions(+), 63 deletions(-) -- 2.47.1